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S29GL032A Datasheet(PDF) 49 Page - SPANSION |
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S29GL032A Datasheet(HTML) 49 Page - SPANSION |
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49 / 88 page  January 28, 2005 S29GLxxxA_00_A2 S29GLxxxA MirrorBit™ Flash Family 47 Advance Information bit programming, a modified programming method is required; please contact your local Spansion representative. Any bit in a write buffer address range cannot be programmed from “0” back to a “1.” Attempting to do so may cause the device to set DQ5=1, of cause the DQ7 and DQ6 status bits to indicate the operation was successful. However, a succeeding read will show that the data is still “0.” Only erase operations can convert a “0” to a “1.” Accelerated Program The device offers accelerated program operations through the WP#/ACC or ACC pin depending on the particular product. When the system asserts VHH on the WP#/ACC or ACC pin. The device uses the higher voltage on the WP#/ACC or ACC pin to accelerate the operation. Note that the WP#/ACC pin must not be at VHH for operations other than accelerated programming, or device damage may re- sult. WP# has an internal pullup; when unconnected, WP# is at VIH. Figure 3 illustrates the algorithm for the program operation. Refer to the Erase and Program Operations–“AC Characteristics” section on page 67 section for pa- rameters, and Figure 14 for timing diagrams. |
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